摘要:
The invention relates to a refrigerating device (10), in particular for an aircraft, having a refrigerant circuit, in which a refrigerant container (12), an expansion valve (14), an evaporator (16), a compressor (20) and a condenser (22) are disposed. To save energy during operation and to increase the reliability and availability of the refrigerating device (10), in the refrigerant circuit there is a compressor bypass line (26), in which a bypass valve (18) is disposed, and a refrigerant pump (30) that is disposed downstream of the condenser (22) and upstream of the evaporator (16). It is possible to dispense with the refrigerant pump (30) if the condenser (22) is disposed at a higher level than the evaporator (16) in the refrigerant circuit.
摘要:
The present invention relates to an aircraft cooling system evaporator arrangement (10) with at least two mutually independent circuits (20a, 20b) for a coolant, at least two evaporation devices (12a, 12b) arranged to be hydraulically parallel for enabling an exchange of heat between the coolant and a refrigerant, at least two supply lines (18a, 18b) for supplying refrigerant to the evaporation devices (12a, 12b), and at least two discharge lines (22a, 22b) for discharging refrigerant from the evaporation devices (12a, 12b). One of the evaporation devices (12a, 12b), one of the supply lines (18a, 18b) and one of the discharge lines (22a, 22b) is assigned to each coolant circuit (20a, 20b). There is provision that the supply lines (18a, 18b) and discharge lines (22a, 22b) assigned to various coolant circuits (20a, 20b) are arranged to be hydraulically separate in each instance and that furthermore at least one refrigerant sensor (24a, 24b) for monitoring a refrigerant state is assigned to each of the discharge lines (22a, 22b). In addition, the evaporator arrangement (10) further includes an expansion valve (16) which for the purpose of controlling streams of refrigerant through the supply lines (18a, 18b) is designed to be driven in accordance with the refrigerant sensors (24a, 24b).
摘要:
An air duct for supplying ambient air in an aircraft includes an air inlet, a flow duct portion and a feed device that is devised to feed ambient air through the air inlet and the flow duct portion. A flow control flap closes the air inlet in a first position, releases a first flow cross-section of the air inlet in a second position and releases a larger second flow cross-section of the air inlet in a third position. The flow control flap is designed to not increase drag significantly in the second position while still enabling flow through the flow duct portion, while increasing drag to increase air fow through the flow duct portion in the third position.
摘要:
The invention relates to a refrigerating device (10), in particular for an aircraft, having a refrigerant circuit, in which a refrigerant container (12), an expansion valve (14), an evaporator (16), a compressor (20) and a condenser (22) are disposed. To save energy during operation and to increase the reliability and availability of the refrigerating device (10), in the refrigerant circuit there is a compressor bypass line (26), in which a bypass valve (18) is disposed, and a refrigerant pump (30) that is disposed downstream of the condenser (22) and upstream of the evaporator (16). It is possible to dispense with the refrigerant pump (30) if the condenser (22) is disposed at a higher level than the evaporator (16) in the refrigerant circuit.
摘要:
A system for controlling a cooling system comprises an operating state detection unit adapted to detect operating signals characteristic of the operating state of the cooling system and/or the operating state of a plurality of cooling energy consumers to be supplied with cooling energy by the cooling system and a database in which priority data dependent on the operating state and characteristic of the priority to be given to the cooling energy consumers in terms of the cooling energy to be supplied in various operating states of the cooling system and/or of the cooling energy consumers, is stored for a plurality of cooling energy consumers to be supplied with cooling energy by the cooling system.
摘要:
A system for cooling and/or heating aircraft devices to be cooled and/or heated includes a first individual cooling and/or heating system associated with a first aircraft device to be cooled and/or heated, a second individual cooling and/or heating system associated with a second aircraft device to be cooled and/or heated, a cooling and/or heating energy supply apparatus adapted to supply cooling and/or heating energy generated by the first and/or the second individual cooling and/or heating system to the first and/or the second aircraft device to be cooled and/or heated, a control device adapted to receive and process signals characteristic of the cooling and/or heating requirements of the first and/or the second aircraft device to be cooled and/or heated and of the load condition of the first and/or the second individual cooling and/or heating system.
摘要:
An aircraft cooling system evaporator arrangement has at least two mutually independent coolant circuits, at least two evaporation devices arranged to be hydraulically parallel for enabling an exchange of heat between the coolant and a refrigerant, at least two supply lines for supplying refrigerant to the evaporation devices, and at least two discharge lines for discharging refrigerant from the evaporation devices. A different one of the evaporation devices, a different one of the supply lines and a different one of the discharge lines are assigned to each of the coolant circuits, and the supply lines are hydraulically separate from each other as are the discharge lines. At least one refrigerant sensor monitors a refrigerant state of each of the discharge lines and an expansion valve is driven in accordance with the refrigerant sensors to control streams of refrigerant through the supply lines.
摘要:
Cooling of an electronic device in an aircraft by case-by-case single-phase or two-phase coolingThere is proposed a method for cooling an electronic device in an aircraft (11), comprising the following steps:circulating a coolant in a cooling circuit,cooling the electronic device (2) by means of the coolant, andin an aircraft outer-shell heat exchanger, emitting the heat taken up by the coolant. The coolant evaporates, at least partially, during the cooling of the electronic device (2), and condenses in the aircraft outer-shell heat exchanger (7). The coolant circulates in the coolant circuit by natural convection.
摘要:
The invention relates to an air duct (10) for supplying ambient air in an aircraft, comprising an air inlet (12), a flow duct portion (16) extending downstream of the air inlet (12) and a feed device (22) that is devised to feed ambient air through the air inlet (12) and the flow duct portion (16). A flow control flap (24) closes the air inlet (12) in a first position, releases a first flow cross-section of the air inlet (12) in a second position and releases a second flow cross-section of the air inlet (12), which is larger than the first flow cross-section, in a third position. The flow control flap (24) is so designed and disposed that a first surface portion (28) of the flow control flap (24), in the second position of the flow control flap (24), is aligned in the region of the air inlet (12) substantially parallel to an aircraft outer skin portion (18) is surrounding the air inlet (12), and that the first surface portion (28) of the flow control flap (24), in the third position of the flow control flap (14), is aligned in the region of the air inlet (12) at an angle to the aircraft outer skin portion (18) surrounding the air inlet (12).
摘要:
A cooling system for cooling heat loads on board an aircraft comprises a cold producing device, a first cold carrier fluid circuit, which is thermally coupled to the cold producing device and is connected to a first heat load in order to carry off heat from the first heat load, and a second cold carrier fluid circuit, which is connected to a second heat load in order to carry off heat from the second heat load. A coupling system of the cooling system is adapted to selectively thermally couple the first cold carrier fluid circuit to the second cold carrier fluid circuit or thermally uncouple it from the second cold carrier fluid circuit. In a method for operating such a cooling system for cooling heat loads on board an aircraft, the first cold carrier fluid circuit is selectively thermally coupled to the second cold carrier fluid circuit or thermally uncoupled from the second cold carrier fluid circuit by means of the coupling system.